Ice floats on water. Liquid water expands upon cooling below 4°C. These (and many other) anomalies arise from the hydrogen bonds between the H2O molecules.

ABSTRACT

Ice floats on
water. Liquid water expands upon cooling below 4°C. These (and many other)
anomalies arise from the hydrogen bonds between the H2O molecules. They
form a complex network, even more developed when the liquid is supercooled
below its equilibrium freezing point. Simulations of supercooled
water have suggested the intriguing possibility of a phase separation
between two distinct liquid phases, but experimental evidence remains
elusive.

In my talk, I
will review our experimental work devoted to measuring properties of
bulk metastable liquid water, supercooled and even stretched to negative
pressures.
Specifically, I will describe how we have obtained the equation of state of
water down to -120 MPa, and its viscosity down to -34°C.